GOST R 52376-2005 PDF

Full title and description

GOST R 52376-2005 — "Прокладки спирально-навитые термостойкие. Типы. Основные размеры" / "Heat-resistant spiral-wound gaskets. Types. Main dimensions." The standard specifies constructional types, main overall and sealing dimensions, and permitted design variants (sealing ring with V-shaped alternating stainless steel ribbon layers and filler, optional inner/outer limiting rings).

Abstract

Specifies types, designation and principal dimensions for heat-resistant spiral-wound gaskets used in flanged connections, including variants with internal and/or external limiting rings and with filler materials such as thermally expanded graphite. Applies across a wide range of nominal pressures and temperatures and covers nominal diameters commonly used for pipeline and equipment flanges. Includes an amendment (Amendment No.1) updating selected provisions.

General information

• Status: Active (national standard of the Russian Federation; contains Amendment No.1).
• Publication date: Designation year 2005; date of introduction/implementation 1 January 2006.
• Publisher: National standard of the Russian Federation (Rosstandart / national standards body).
• ICS / categories: OCS/ICS classification related to sealing products for piping and equipment — ОКС 23.040.60 (gaskets, packings, sealing products).
• Edition / version: GOST R 52376-2005 (with Изменение №1 introduced 01 June 2021).
• Number of pages: Published formats commonly listed as 16–18 pages depending on publisher/format.

Scope

The standard applies to heat-resistant spiral-wound gaskets with a sealing ring formed by alternating V-shaped layers of stainless steel strip and filler (for example thermally expanded graphite), and with optional internal and/or external limiting rings. It covers use on flanges and connecting parts with sealing surfaces of specified executions, for nominal (working) pressures from 0.1 to 20.0 MPa (1 to 200 kgf/cm²), temperatures of working media from −253 °C to +600 °C, and nominal diameters (DN) approximately from 10 to 3000 mm.

Key topics and requirements

• Definitions and designation of spiral-wound (SNP) gasket types: with sealing ring only and with inner, outer or both limiting rings.
• Principal overall and sealing dimensions (standardized dimensions for DN and PN ranges).
• Permitted materials and construction notes: stainless steel winding strip, filler materials such as expanded graphite; allowable combinations for temperature and medium resistance.
• Pressure (PN) and temperature ratings and the applicable DN ranges for each type.
• Marking, identification and basic conformity requirements for supplied gaskets.
• Reference to flange sealing surface types and mating flange dimensions (compatibility with flange standards specified in the text).

Typical use and users

Used by gasket and sealing manufacturers, flange and pipework component suppliers, mechanical designers, maintenance engineers and quality departments in industries such as oil & gas, chemical processing, power generation, shipbuilding and any industrial applications where high-temperature or cryogenic flange sealing is required. Product listings and manufacturer pages show wide commercial use for flanged pipeline joints and equipment connections.

Related standards

Directly related to national flange and sealing-surface standards (the GOST series for flanges). The standard references sealing-surface executions given in GOST 12815 (and its later consolidated replacement standards such as GOST 33259-2015 for flange dimensions and sealing-surface types). Users typically apply GOST R 52376 together with the applicable flange dimensional/face-type standard when selecting or specifying gaskets.

Keywords

spiral-wound gasket; heat-resistant gasket; SNP; spiral-wound; sealing ring; limiting ring; flange gasket; thermally expanded graphite; stainless steel winding; PN 0.1–20 MPa; DN 10–3000 mm.

FAQ

Q: What is this standard?

A: GOST R 52376-2005 is a Russian national standard that defines types and main dimensions for heat-resistant spiral-wound gaskets (SNP), including variants with inner/outer limiting rings and recommended materials.

Q: What does it cover?

A: It covers constructional types, principal dimensions, applicable pressure and temperature ranges (approximately PN 0.1–20.0 MPa and −253 °C to +600 °C), and nominal diameter ranges commonly used on flanged connections. It also indicates compatible sealing-surface executions per relevant flange standards.

Q: Who typically uses it?

A: Manufacturers of spiral-wound gaskets, flange and piping designers, procurement and maintenance teams in petroleum, chemical, power and process industries, and testing/quality organizations specifying or verifying flange gasket conformity.

Q: Is it current or superseded?

A: GOST R 52376-2005 is listed as a national standard in force and has an official amendment (Изменение №1) introduced in 2021; users should check the national standards register or publisher for the latest status and any subsequent amendments or replacements.

Q: Is it part of a series?

A: It is part of the broader set of GOST/GOST R standards governing flanges, sealing surfaces and gasket types; it is commonly used together with flange standards (historically GOST 12815 and later consolidated flange standards such as GOST 33259-2015).

Q: What are the key keywords?

A: Spiral-wound gasket, heat-resistant, sealing ring, limiting ring, graphite filler, stainless steel winding, flange gasket, PN, DN.